Lotus 49B problem

[Orso]

I have for a long time planned to build my Ebbro kit as the 1968 US GP of Andretti and even bought the decals for it. I noticed that the front wings looked shorter on Andretti's car but that would be a minor problem. I have now started on the model and started to notice other things that are wrong. Andretti's car is of 1968 while the kit is 1969 so a larger problem is the roll bar that are completely different.
So are there any more large differences? Wheels or other things that are visible on the outside of the car. I never build with open panels, doors and such so if things are hidden it isn't of a big problem.